It has been tested and refined through computer simulations. When it is followed correctly, it reduces the house edge to the minimum, which is usually about one-half of a percent. When you use basic strategy, you make your decision to hit, stand, or double down based on your two cards and the dealer's up card. Early Surrender When a player forfeits before the dealer checks for blackjack, thus losing half of their bet. Even Money This occurs when the player has blackjack and the dealer has an ace up-card. The dealer can offer the player a pay-off equal to the bet before checking their down-card.
- What Happens When Dealer Gets Blackjack
- What Happens If Dealer Gets Blackjack
- What Happens If Dealer Has Blackjack Play
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On This Page
Introduction
Super Sevens/Crazy Sevens/Lucky Sevens is a blackjack side bet based on the player's first three cards. If the first card is a seven, the player wins. The winnings increase for two or three consecutive sevens and even more if the sevens are suited.
This analysis assumes that if the player gets two sevens and splits, then his first card to the first hand will count towards a possible three-card seven.
What is not always clear is what happens if the player has two sevens and the dealer gets a blackjack. I assume that the player is paid for two sevens with no chance for a third card. I can say this is definitely the rule with Lucky Sevens. However, I analyzed the game both ways below.
Rules
The following pay table shows all the different ways to win. There are separate pay tables for Super Sevens and Crazy Sevens, which are indicated in separate columns. All wins are on a 'to one' basis.
Pay Table
| Event | Super Sevens | Crazy Sevens | Lucky Sevens |
|---|---|---|---|
| 7-7-7 suited | 5000 | 2000 | 500 |
| 7-7-7 | 500 | 500 | 100 |
| 7-7 suited | 100 | 150 | 50 |
| 7-7 | 50 | 25 | 25 |
| 7 | 3 | 5 | 3 |
Rule Variants:
- If player has two sevens and dealer has a blackjack, does the player get a third card for purposes of the side bet only?
- If the player gets two sevens and splits, what happens?
Super Sevens
The following table shows an analysis of the Super Sevens bet assuming six decks and the player is guaranteed a third card, including after a split and when the dealer has a blackjack. The lower right cell shows a house edge of 11.40%.
Super Sevens — Six Decks — Three-Card Guarantee
| Event | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 7-7-7 suited | 5000 | 480 | 0.000016 | 0.079787 |
| 7-7-7 | 500 | 11,664 | 0.000388 | 0.193883 |
| 7-7 suited | 100 | 34,560 | 0.001149 | 0.114894 |
| 7-7 | 50 | 124,416 | 0.004136 | 0.206809 |
| 7 | 3 | 2,142,720 | 0.071234 | 0.213703 |
| Loser | -1 | 27,766,080 | 0.923077 | -0.923077 |
| Total | 30,079,920 | 1.000000 | -0.114000 |
The next table shows an analysis of the Super Sevens bet assuming six decks and the player is capped at two cards if the dealer has a blackjack. If the player splits, the next card shall still count towards triple-seven wins. The lower right cell shows a house edge of 12.61%.
What Happens When Dealer Gets Blackjack
Super Sevens — Six Decks — No Three-Card Guarantee
| Event | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 7-7-7 suited | 5000 | 21,735,360 | 0.000015 | 0.075924 |
| 7-7-7 | 500 | 528,169,248 | 0.000369 | 0.184496 |
| 7-7 suited | 100 | 1,650,654,720 | 0.001153 | 0.115319 |
| 7-7 | 50 | 5,942,356,992 | 0.004151 | 0.207574 |
| 7 | 3 | 101,963,473,920 | 0.071234 | 0.213703 |
| Loser | -1 | 1,321,276,682,880 | 0.923077 | -0.923077 |
| Total | 1,431,383,073,120 | 1.000000 | -0.126061 |
The next table shows the house edge of the Super Sevens side bet according to the number of decks and whether or not the player is guaranteed a third card if the dealer has a blackjack.
Super Sevens — Summary
| Decks | Gurantee | No Guarantee |
|---|---|---|
| 4 | 15.92% | 16.97% |
| 5 | 13.25% | 14.39% |
| 6 | 11.40% | 12.61% |
| 8 | 9.01% | 10.29% |
Crazy Sevens
The following table shows an analysis of the Crazy Sevens bet assuming six decks and the player is guaranteed a third card, including after a split and when the dealer has a blackjack. The lower right cell shows a house edge of 6.54%.
Crazy Sevens — Six Decks — Three-Card Guarantee
| Event | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 7-7-7 suited | 2000 | 480 | 0.000016 | 0.031915 |
| 7-7-7 | 500 | 11,664 | 0.000388 | 0.193883 |
| 7-7 suited | 150 | 34,560 | 0.001149 | 0.172341 |
| 7-7 | 25 | 124,416 | 0.004136 | 0.103405 |
| 7 | 5 | 2,142,720 | 0.071234 | 0.356171 |
| Loser | -1 | 27,766,080 | 0.923077 | -0.923077 |
| Total | 30,079,920 | 1.000000 | -0.065362 |
The next table shows an analysis of the Crazy Sevens bet assuming six decks and the player is capped at two cards if the dealer has a blackjack. If the player splits, the next card shall still count towards triple-seven wins. The lower right cell shows a house edge of 7.53%.
What Happens If Dealer Gets Blackjack
Crazy Sevens — Six Decks — No Three-Card Guarantee
| Event | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 7-7-7 suited | 2000 | 21,735,360 | 0.000015 | 0.030370 |
| 7-7-7 | 500 | 528,169,248 | 0.000369 | 0.184496 |
| 7-7 suited | 150 | 1,650,654,720 | 0.001153 | 0.172978 |
| 7-7 | 25 | 5,942,356,992 | 0.004151 | 0.103787 |
| 7 | 5 | 101,963,473,920 | 0.071234 | 0.356171 |
| Loser | -1 | 1,321,276,682,880 | 0.923077 | -0.923077 |
| Total | 1,431,383,073,120 | 1.000000 | -0.075275 |
The next table shows the house edge of the Crazy Sevens side bet according to the number of decks and whether or not the player is guaranteed a third card if the dealer has a blackjack.
Crazy Sevens — Summary
| Decks | Gurantee | No Guarantee |
|---|---|---|
| 4 | 10.09% | 11.01% |
| 5 | 7.97% | 8.93% |
| 6 | 6.54% | 7.53% |
| 8 | 4.71% | 5.74% |
Lucky Sevens
Lucky Sevens is a version of this side bet in use by BetConstruct live dealer blackjack game. They do not deal a third card if the dealer has a blackjack. The following table shows the Lucky Sevens pay table and analysis, based on the eight decks they use. The lower right cell shows a house edge of 49.88% (ouch!).
Lucky Sevens — Eight Decks — No Three-Card Guarantee
| Event | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 7-7-7 suited | 500 | 108,839,808 | 0.000018 | 0.008949 |
| 7-7-7 | 100 | 2,301,184,512 | 0.000378 | 0.037844 |
| 7-7 suited | 50 | 7,345,594,368 | 0.001208 | 0.060400 |
| 7-7 | 25 | 25,184,894,976 | 0.004142 | 0.103543 |
| 7 | 3 | 432,811,524,096 | 0.071177 | 0.213531 |
| Loser | -1 | 5,613,024,453,120 | 0.923077 | -0.923077 |
| Total | 6,080,776,490,880 | 1.000000 | -0.498810 |
Here is the house edge of the Lucky Sevens pay table for other numbers of decks.
- Four decks — 51.25%
- Five decks — 50.71%
- Six decks — 50.34%
- Eights decks — 49.88%
What Happens If Dealer Has Blackjack Play
Espresso Games Rules
Espresso Games software offers a Lucky 7 side bet in one of their blackjack games, which follows this format. They use eight decks and I presume no three-card guarantee. The following table shows their pay table and all the odds. The lower right cell shows a house edge of 7.83%.
Espresso Games Rules
| Event | Pays | Combinations | Probability | Return |
|---|---|---|---|---|
| 7-7-7 suited | 3000 | 108,839,808 | 0.000018 | 0.053697 |
| 7-7-7 | 500 | 2,301,184,512 | 0.000378 | 0.189218 |
| 7-7 suited | 150 | 7,345,594,368 | 0.001208 | 0.181200 |
| 7-7 | 50 | 25,184,894,976 | 0.004142 | 0.207086 |
| 7 | 3 | 432,811,524,096 | 0.071177 | 0.213531 |
| Loser | -1 | 5,613,024,453,120 | 0.923077 | -0.923077 |
| Total | 6,080,776,490,880 | 1.000000 | -0.078344 |
Internal Links
For a huge list of all kinds of blackjack side bets, please see my blackjack side bets page.
Objective | To beat the dealer by having a higher card total without going over 21 |
Card Values | 2 to 10 = Face Value J, Q, K = 10 Ace = 1 or 11 **Note: The card suits are irrelevant in Blackjack.** |
Definitions | Blackjack = an Ace and a card worth 10 points (21 total) Hole = the dealer’s card that is face down Hit = draw another card Stand = take no more cards Bust = going over 21 |
How to Play | - Players place bets by putting the desired number of chips in the circle in front of their seat. - The dealer deals two cards face up to each player. The dealer receives one card face up and one face down. - The dealer asks each player, in turn, whether they want to hit or stand. - Base your decision on the assumption that the dealer has a card worth 10 points in the hole. - Indicate that you want a hit by tapping the table or making a motion to beckon another card (as if motioning someone to “come on back”). Continue until you desire no more cards. **Note: Most casinos do not allow you to touch the cards.** - If you don’t want a hit (or are finished hitting), indicate so by waving your hand back and forth face down over your cards. - Once all players have made their decisions, the dealer reveals his hole card and hits or stands as appropriate. - Payouts are issued based on the outcome. |
Winning | If your total is higher than the dealer’s (or if the dealer busts), you win. |
Payouts | - If you get Blackjack, the dealer pays you 3 to 2. - If you and the dealer both get Blackjack, it is a push and no chips are given or taken away. - If you have a higher total than the dealer (or the dealer busts), the dealer matches the amount of your chips. - If you have a lower total than the dealer (or you bust), the dealer takes your chips. |
Doubling Down | You are allowed to double your bet after receiving your first two cards. You do this by placing the additional chips next to your original bet. If you decide to do this, you receive only one additional card. |
Splitting | If you receive two cards of the same number, you can split them into two separate hands. Do this by placing another equal bet alongside your first bet. The dealer will separate your cards and give you an additional card to make each one a complete hand by itself. You will then play each hand separately as you normally would. |
Insurance | If the dealer’s face up card is an ace, he will offer players the option of buying insurance. If you choose to do so you can then wager half your original bet (in addition to it) that the dealer does have Blackjack. If he does, your insurance is paid 2 to 1 but your original bet is lost (meaning you break even for the hand). If he does not have Blackjack, you lose your insurance. |
Even Money | If you have Blackjack and the dealer has an ace showing, the dealer will offer you even money for your Blackjack (instead of 3 to 2). If you do not take it and the dealer also has Blackjack, you will have a push just like normal. |